The professional, friendly Java community. 21,500 members and growing!

The Java Programming Forums are a community of Java programmers from all around the World. Our members have a wide range of skills and they all have one thing in common: A passion to learn and code Java. We invite beginner Java programmers right through to Java professionals to post here and share your knowledge. Become a part of the community, help others, expand your knowledge of Java and enjoy talking with like minded people. Registration is quick and best of all free. We look forward to meeting you.

Re: Linklist Question

If I understand the problem correctly, your Node class contains its data as a type Object? So even when you create a new Node in the code posted with an object of type Rentable, it's reference is of type Object. So to access the functions defined in Rentable, you must cast the object

head = new Node(new Rentable(),null);
((Rentable)head.data).getName();//should be checked at runtime with something like instanceof to make sure its the correct object or a class cast exception may be thrown.